EV3

Time-lapse video using EV3 and webcam

Time-lapse video using EV3 and webcam

I wanted to try making a home surveillance project using my webcam and EV3 sending images into Dropbox. But how to put the obvious time and date stamp on the images? It turns out this is really easy to do using the Graphics2D Java class! A short tutorial on how to do this…

More...

Webcam + leJOS + Dropbox = wow!

Webcam + leJOS + Dropbox = wow!

Now that we have my EV3 connected to Dropbox, let’s have some fun. In this project I use a cheap webcam connected to the EV3 to take a photo and upload it into my Dropbox account. It’s a wireless digital camera using the EV3 and Dropbox!

More...

Set up Dropbox in leJOS on the EV3

Set up Dropbox in leJOS on the EV3

Here’s a quick tutorial to add Dropbox support into a Java program in leJOS 0.9.0. It turned out to be far easier than I thought! Read on to discover how you can easily upload and download files to and from your Dropbox account from the EV3 in leJOS. Dropbox? On the EV3? The first thing(…)

More...

Book review: Lego Mindstorms EV3 Essentials eBook

Book review: Lego Mindstorms EV3 Essentials eBook

I received a review electronic copy of Packt Publishing’s ‘Lego Mindstorms EV3 Essentials’ book. This book covers Java and leJOS programming on the EV3, so it differs from most other books on the market in that it choose a 3rd party environment rather than relying on the Lego-supplied one. It also requires a Linux environment(…)

More...

Review: Lego Mindstorms EV3 discovery book

Review: Lego Mindstorms EV3 discovery book

I was very excited to receive a copy of Laurens Valk’s latest book; The Lego Mindstorms EV3 Discovery Book published by NoStarch Press. You may know Laurens from his previous Lego Mindstorms titles, and if you own any of his previous works you’ll know he puts considerable time and attention into his books . This edition is(…)

More...

Chopp3r – a Lego Mindstorms EV3 helicopter

Chopp3r – a Lego Mindstorms EV3 helicopter

CHOPP3R is a search-and-rescue helicopter made from a single 31313 Lego Mindstorms EV3 set. I built this as a potential model for a book, but as the book has not materialised I decided to publish it instead! CHOPP3R has working top and rear rotors driven my a medium motor. It searches for a liferaft containing(…)

More...